How many Books?

Probability Level 4

There are k k books in a library and l l copies of each book. In how many ways can a student select one or more books?

l k − 1 l^k - 1 ( l + 1 ) k − 1 (l+1)^k-1 ( l + 1 ) k (l+1)^k l − k + 1 l - k + 1

Rajdeep Bharati by Rajdeep Bharati , 21, India

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1 solution

Rajdeep Bharati
Feb 19, 2016

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